Mastering Vietnam LTD Address: 23th Floor, Vinaconex 9 Building, Pham Hung Street, Me Tri Ward, Nam Tu Liem District, Ha Noi City Enterprise code: 0109786060 Phone: 0984216584 Representative: Vi Nguyen Tuong Linh Me Tri Ward, Nam Tu Liem District, Ha Noi CityFounding date: 21 - 10 - 2021